Track for sliding sashes



R. I. EUS TIS El AL TRACK FDR SLIDING SASHES Filed Feb. 24. 1 26 Sept. 25, 1928.

5 each other and which Patented Sept. 25-, 1928.

UNITED STATES PATENT OFFICE.

ROBERT I.

To THE or lIEVADA.

A CORPORATION TRACK ron SLIDING SASHES.

Application filed February 24, 1926.

This invention relates to tracks and supports for sliding closures or sash.

An object of the invention is to track or support for a sliding closure of improved construction, which will greatly reduce the friction, enabling the sash to slide very easily and which will run smoothly.

' Another object of the invention is to provide a track for sliding closures which is of cheap, simpleand durable construction and which will not be caused to. operate inefliciently in the event that dirt accumulates upon it.

With the foregoing and other objects in view which will be made manifest in the following detailed description and specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein:

Figure 1 is a partial side elevation, parts being broken away and shown in section, illustrating the improved track and closure mounted thereon,

Fig. 2 is a vertical section taken on the line 22 of Fig. 1, r

Fig. 3 is a partial side elevation illustrating a portion of the cage for the bearing, and

Fig. 4 is a horizontal section taken on the line 4-4 of Fig. 3.

Referring to the accompanying drawings wherein similar reference characters designate similar parts throughout, the support for the sash is generally designated at 10. the sashv being indicated at 11 and in the present instance constituting a paneof glass. The im proved track or support consists of two opposed channel members 12 and 13, which mav be formed of sheet metal or. other material. The channel member 12 is mounted on the lower edge of the closure or sash 11. and the channel 13 is mounted on the support 10. Each of these channelsprovides two longitudinal metallic strips which are parallel to have relatively sharp edges 10' adapted to be engaged by balls 14. These relatively sharp edges 10 form a bearing surface upon which the balls 14 are adapted to roll, and itwill be readily seen that any material such as paper. leaves. etc.. tending to cover the tracks will be severed on the pointed edges bv virtue of the heavy weight of the sash 11.. It will be noted that the halls provide a Serial No. 90,269.

1% are slightly greater in diameter than the distances between the walls of the channels 12 and 13, so that the balls ride or roll upon the edges of the channels.

As a means for keeping the balls 14 properly spaced, a cage is provided which in the present instance consists of two strips of sheet metal and 16. These strips have apertures formed in them at various intervals and tongues 17 are formed integral with them adjacent the apertures. These tongues are bent laterally outwardly so as to be positioned against the side faces of the Walls and serve to maintain them in their respective apertures, but at the same time permit them to roll therein. The two strips 15 and 16 are secured to each other as by rivets 18. It will be noted that the cage so constructed has its top and bottom portions disposed within the channels 12 and 13, but tion to the channels.

As a means for mounting the sash or closure 11 upon the upper channel 12, a channel 19 has its back secured to the back of the channel 12. and the lower edge of the sash 11 extends into the channel. It is mounted therein by means of a layer of resilient material,

such as a strip of felt indicated at 20.

From the above described construction it will be readily appreciated that the improved track provides a very efficient anti-friction construction for rollably supporting a closure or sash. When the sash is shifted. the balls 14 roll upon the edges of the channel 13. and the channel 12 rolls on the upper surfaces of the balls. It will be readily understood that the channel 12, and consequently the sash 11, on rolling upon the balls 14 will more relatively to the cage and balls, and that the cage and balls 14 will move relatively to the channel 13. Usually the cage and balls move relatively to the channel 13 at about one-half the velocity at which the sash and channel 12 are moving relatively to the channel 13. This is variable, however. depending upon the relative sizes of the balls 14: with respect to the widths of the channels 12 and 13. It will be readily understood that the cage may be formed in other manners, such as by using two strips of compressed fiber, in which apertures are formed, and between which the balls may be positioned. In such constructions the apertures in the op- EUSTIS AND FRED S. BE IGER, 0]? LOS ANGELES, CALIFORNIA, ASSIGNORS EUSTIS SPECIALTY 00., OF LOS ANGELES, CALIFORNIA,

that they are in spaced relap the sides of the balls,

in the detail of the invention as posed faces of. the two strips are preferably countersunk or counterbored so as to receive and at the same tiine ret-ain them within the apertures. V

,A particularadvantage of this constructend to accumulate upon the track. it will not interfere with themovement of the sash, It will be noted that any dirt, which would tendto accumulate upon the track will fall to the bottom of the channel 13. and as the bottom of the cage is a considerable distance above the bottom of the channel, the dirt will not stop the movement of the cage and balls therein.

' Itwill b'e understoodrthatvarious changes of construction may he made without departing' from the spirit or scope defined by the appended claims;

Wetlaini: .7 7

v1. A; track for sliding sash and the like tionresides in the fact that if any dirt should comprising two opposed channels, balls disposed between the edges of the walls of ti e channels, and av cage for said halls comprising two strips of metal having apertures therein in which the halls are disposed and means for maintaining the balls in said apertures. I t v 2. A track for sliding sash and the like comprising two opposed channels balls disposed bc-tweenand bearing against the edges of the walls of the channels, and a cage for said balls comprising two metallic strips having aligned apertures therein in which the balls are/ disposed, there being fingers'forined on the, strip's adjacent said apertures which are arranged. adjacent the sides of the balls for maintaining the halls in the apertures. I

In testnnony whereof we have signed our names to this specification.

ROBERT. I. 11UsTEIs. FRED s. BEIGER- 

